US4255283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxydehydrogenation process for alkylaromatics and catalyst therefor
Assignee: Standard Oil Co
•
Filing: 1978-03-23
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Granted: 1981-03-10
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Expires: 1998-03-23
Abstract
Abstract This invention relates to an improved process for the dehydrogenation of alkyl-substituted aromatic compounds to the corresponding alkenyl-substituted aromatics in the presence of oxygen and in the presence of an improved metal phosphate catalyst composition.
Inventors
- 👤 Joseph P. Bartek
- 👤 Robert K. Grasselli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:14
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; C07C; C07C5/00; C07C5/42; C07C5/48
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
125 words
The catalyst composition represented by the empirical formula: A.sub.a M.sub.b M.sup.1.sub.c M.sup.11.sub.d B.sub.e P.sub.y O.sub.x wherein A is an alkali metal and or thallium; M is one or more elements of nickel, cobalt, copper, manganese, magnesium, zinc, calcium, niobium, tantalum, strontium or barium; M 1 is one or more of the elements of iron, chromium, uranium, thorium, vanadium, titanium, lanthanum or the other rare earths; M 11 is one or more of the elements of tin, boron, lead, germanium, aluminum or tungsten, B is one or more of the elements of bismuth, antimony, and arsenic; P is phosphorus; and wherein a through y have the following values: a=0 to 5; b=4 to 20; c=0.1 to 10; d=0 to 4; e=0.1 to 12; y=8 to 16;
Claim 2
Dependent Claim
125 words
The catalyst composition represented by the empirical formula: A.sub.a M.sub.b M.sup.1.sub.c M.sup.11.sub.d B.sub.e P.sub.y O.sub.x wherein A is an alkali metal and or thallium; M is one or more elements of nickel, cobalt, copper, manganese, magnesium, zinc, calcium, niobium, tantalum, strontium or barium; M 1 is one or more of the elements of iron, chromium, uranium, thorium, vanadium, titanium, lanthanum or the other rare earths; M 11 is one or more of the elements of tin, boron, lead, germanium, aluminum or tungsten, B is one or more of the elements of bismuth, antimony, and arsenic; P is phosphorus; and wherein a through y have the following values: a=0 to 5; b=4 to 20; c=0.1 to 10; d=0 to 4; e=0.1 to 12; y=8 to 16;
Claim 3
Dependent Claim
29 words
x=the number of oxygens required to satisfy the valence requirements of the other elements present; and wherein the sum of 2b+3(c+e) is greater than 9 and less than 3y.
Claim 4
Dependent Claim
29 words
x=the number of oxygens required to satisfy the valence requirements of the other elements present; and wherein the sum of 2b+3(c+e) is greater than 9 and less than 3y.
Claim 5
Dependent Claim
63 words
The catalyst composition of claim 1 wherein a is in the range of 0-1; b is in the range of 4 to 12; c is in the range of 0.1 to 4; d is in the range of 0 to 2; e is in the range of 0.1 to 4; and the sum of 2b+3(c+e) is greater than 9 and less than 3y.
Claim 6
Dependent Claim
22 words
The catalyst composition of claim 1 wherein M in the catalyst composition is cobalt, M 1 is lanthanum, and B is bismuth.
Claim 7
Dependent Claim
22 words
The catalyst composition of claim 1 wherein M in the catalyst composition is cobalt, M 1 is iron and B is bismuth.
Claim 8
Dependent Claim
22 words
The catalyst composition of claim 1 wherein M in the catalyst composition is magnesium, M 1 is lanthanum and B is bismuth.
Claim 9
Dependent Claim
18 words
The catalyst composition of claim 1 wherein M is selected from the group consisting of magnesium and cobalt.
Claim 10
Dependent Claim
25 words
The catalyst composition of claim 1 wherein M' is selected from the group consisting of iron, chromium, uranium, thorium, titanium, lanthanum and rare earth element.
Claim 11
Dependent Claim
18 words
The catalyst composition of claim 7 wherein M' is selected from the group consisting of iron and lanthanum.
Claim 12
Dependent Claim
11 words
The catalyst composition of claim 1 wherein the catalyst contains tin.
Claim 13
Dependent Claim
13 words
The catalyst composition of claim 1 wherein the catalyst contains bismuth and antimony.
Claim 14
Dependent Claim
11 words
The catalyst composition of claim 1 wherein the catalyst contains bismuth.
Claim 15
Dependent Claim
11 words
The catalyst composition of claim 1 wherein the catalyst contains antimony.
Claim 16
Dependent Claim
10 words
The catalyst composition of claim 1 wherein d is 0.
Claim 17
Dependent Claim
12 words
The catalyst composition of claim 1 wherein d is greater than 0.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |